P Premier M Magnetics Inc. SUPPORT PRODUCTS FOR MICRO LINEAR I.C.'S "INNOVATORS IN MAGNETICS TECHNOLOGY" ➊ Magnetics Micro Linear's ML4824 Switcher ➋ Magnetics For Micro Linear's Ballast IC's GENERAL APPLICATION ML4824-1 100WATT PFC UNIVERSAL OFF-LINE SWITCHING MAGNETICS Premier Magnetics' TSD-735 Switch Mode Transformer was designed for use with MICRO LINEAR'S ML4824-1 PFC/PWM Combination off-line controller IC, in the Two Transistor Single-Ended Forward Converter Configuration. This converter topology can provide isolated multiple outputs with efficiencies up to 90%. Premiers' TSD-735 transformer has been optimized to provide maximum power throughput and to provide the necessary bias voltage for the ML4824-1 and it's auxiliary circuitry. The ML4824-1 from Micro Linear is highly integrated power supply controller, incorporating a PFC front end operating at 100KHz, and a synchronized PWM switching regulator running @ 50KHz. This combination provides all necessary functions for a Universal-Input, Power Factor Corrected DC power supply in the 50 to 500W output range. The TSD734 boost inductor and TSD-735 output transformer are critical to the performance of the circuit. Together they define the harmonic reduction, efficiency, output power and the size of the Power Factor Correction and DC output stages. Below is a typical universal input, high precision application circuit utilizing Micro Linear's ML4824-1 PFC/PWM control IC. The AC mains voltage is power factor corrected and boosted to 382VDC by the PFC half of the ML4824-1 and the TSD-734 PFC boost inductor. The PWM half of the ML4824-1 and the PMGD-03 gate drive transformer then provide the MOSFET gate drives for operating the TSD-735 output transformer which converts the 382VDC hot rail to a regulated 12VDC, 100W output. Recommended component values can be obtained from Micro-Linear's ML48241 application notes. Evaluation boards are available from Micro Linear. SCHEMATIC D2 >> L1 TSD-734 F1 ~ 3 + D1 6 C1 NEUT >> BR1 ~ R2A R27 R1A - Q2 C4 G C5 S R21 R17 + 90-260Vac 50/60Hz +382VDC HOT RAIL D Q1 D9 R7A R2B R1B C3 R7B D G S C25 T1 PMGD-03 (TSD-736) R30 D5 6 1 D7 T2 TSD-735 R3 R4 C30 R14 1 Q3 D 6 D6 C24 D11B R18 >> C12 R24 R9 + R16 R13 Q4 R12 IEAO IAC ISENSE VRMS SS VDC RAMP1 RAMP2 D4 C7 VEAO FB REF VCC V01 V02 GND DCILIM 16 15 14 13 12 11 10 9 R5B R5C A R22 C10 C E R11 C15 R8 R5A C22 C + 1 2 3 4 5 6 7 8 R23 U2 R6 ML4824 12V RETURN D3 C17 C7 Vout C21 5 R20B R28 +12V + R20A >> 7 &8 G S R19 11 & 12 BIAS C20 3 L2 VTP-05007 + R15 D11A SECONDARY 3 + C2 4 PRIMARY LINE R10 C16 C13 R26 C14 U3 C8 C9 C23 C R R5D C19 D8 C18 C11 D10 Specifications subject to change without notice. A R25 mlsuport 09/98 20381 BARENTS SEA CIRCLE, LAKE FOREST, CA 92630 • TEL: (949) 452-0511 • FAX: (949) 452-0512 • http://www.premiermag.com 1 P Premier M Magnetics Inc. SUPPORT PRODUCTS FOR MICRO LINEAR I.C.'S "INNOVATORS IN MAGNETICS TECHNOLOGY" GENERAL ELECTRICAL SPECIFICATIONS AT 25OC - OPERATING TEMPERTURE RANGE 0OC TO +70OC The following magnetics have been designed for use with a variety of Micro Linear semiconductors. To receive complete specifications & application information, please contact the factory or fill out our Literature Request form to recieve the respective part number detail data sheet. Micro Linear I.C. Part Number APPLICATION INFORMATION TSD-734 TSD-735 TSD-1047 TSD-1048 PMGD-03 ML4824 ML4824 ML4824 ML4824 ML4824 PFC Boost Inductor, ML4824-1 EVAL, 100W @ 50KHz Main Switching Transformer, ML4824-1 EVAL, 100W @ 100KHz PFC Boost Inductor, ML4824-2 EVAL, 100W @ 100KHz Main Switching Transformer, ML4824-2 EVAL, 100W @ 200KHz Gate Drive Transformer (formerly TSD-736), ML4824-1 EVAL E375 EE30 E375 EI33/29 EP7 TSD-845 TSD-835 TSD-939 TSD-938 ML4826 ML4826 ML4826 ML4826 PFC Boost Inductor, ML4826 @ 500W Main Switching Transformer, ML4826, 500W Multiple Outputs PFC Boost Inductor, ML4826 @ 650W Main Switching Transformer, ML4826, 650W Multiple Outputs E55/21 ETD-49 E55/21 E55/21 TSD-746 TSD-917 PMGD-04 TSD-748 TSD-749 ML4831 ML4831 ML4831 ML4831 ML4831 Boost Inductor, T1 on ML4831 220V EVAL Board Boost Inductor, T1 HORZ version on ML4831 220V EVAL Board Gate Drive, T2 on ML4831 220V EVAL Board (formerly TSD-747) Main Switching Transformer, T4 on ML4831 220V EVAL Board Current Sense Transformer, T5 on ML4831 220V EVAL Board EF25-VERT EF25-HORZ EP10 EF25-VERT EF25-VERT TSD-789 ML4821 T1 on ML4821-EVAL, PFC Controller PQ40 TSD-780 TSD-843 TSD-800 TSD-801 TSD-918 TSD-802 TSD-919 TSD-831 TSD-844 TSD-902 TSD-903 ML4831 ML4831 ML4831 ML4831 ML4831 ML4831 ML4831 ML4831 ML4831 ML4831 ML4831 Main Switching Transformer, T4 on ML4831 277V EVAL Board Main Switching Transformer, T4 HORZ version ML4831 277V EVAL Main Switching Transformer, T3 on ML4831 220V Low Cost EVAL Power Transformer, T3 Variation on ML4831 220V EVAL Board Power Transformer, T3 HORZ version Variation on ML4831 220V Main Transformer, T4 Variation on ML4831 220V EVAL Main Transformer, T4 HORZ version Variation on ML4831 220V Boost Inductor, T1 on ML4831 120V EVAL Board Boost Inductor, T1 HORZ version ML4831 120V EVAL 100KHz ZVS PFC Boost Inductor 100KHz ZVS PFC Resonant Inductor EF25-VERT EF25-HORZ EF25-VERT EF25-VERT EF25-HORZ EF25-VERT EF25-HORZ EF25-VERT EF25-HORZ E42/20 E2425 TSD-882 ML4832 Boost Inductor, T1 on ML4832 220V EVAL Board EF25-VERT TSD-965 TSD-1086 TSD-1082 TSD-1087 TSD-892 TSD-1085 ML4833 ML4833 ML4833 ML4833 ML4833 ML4833 Boost Boost Boost Boost Boost Boost EF25-VERT EF25-HORZ EF25-VERT EF25-HORZ EF25-VERT EF25-HORZ TSD-756 TSD-904 ML4863 ML4900 Flyback Transformer, Vin = 3.3V, Vout= 3.3V, 5.0V & 12V 15A Powdered Iron inductor, 1.4uHy PART NUMBER Package Inductor, T1 on ML4833 220V Dimming EVAL Board Inductor, T1 HORZ version, ML4833 220V Dimming EVAL Inductor, T1 on ML4833 120V Dimming EVAL Board Inductor, T1 HORZ version, ML4833 120V Dimming EVAL Inductor, T4 on ML4833 220V Dimming EVAL Board Inductor, T4 HORZ version, ML4833 220V Dimming EVAL Specifications subject to change without notice. EF25-VERT Toroid mlsuport 09/98 20381 BARENTS SEA CIRCLE, LAKE FOREST, CA 92630 • TEL: (949) 452-0511 • FAX: (949) 452-0512 • http://www.premiermag.com 2